ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,511,999, issued on Dec. 30, was assigned to Honda Motor Co. Ltd. (Tokyo).

"Attention calling system and attention calling method" was invented by Masayuki Sato (Wako, Japan) and Takahiro Matsuoka (Wako, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An attention calling system includes a time headway (THW) acquisition unit that repeatedly acquires THW at predetermined time intervals, the THW being a value obtained by dividing an inter-vehicle distance between own vehicle and a preceding vehicle by vehicle speed of the own vehicle, an identification unit that identifies a type of the preceding vehicle, and a notification unit that outputs to an occ...